<template>
  <div>
    <!-- 面包屑导航 -->
    <my-son :secTitle="setTitle" :thirTitle="thirTitle"></my-son>
    <el-card>
      <!-- 1.为ECharts准备一个具备大小（宽高）的Dom -->
      <div id="main" style="width: 740px;height:400px;"></div>
    </el-card>
  </div>
</template>
<script>
//2.导入echarts
import echarts from 'echarts'
import _ from 'lodash'
export default {
  data() {
    return {
      setTitle: '数据统计',
      thirTitle: '数据报表',
      //需要合并的数据
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  created() {
  },
  //此时页面上的dom元素，已经渲染完毕
  async mounted() {
    //基于准备好的div，初始化echarts实例
    const myChart = echarts.init(document.getElementById('main'))

    const { data: res } = await this.$http.get('reports/type/1')
    if(res.meta.status!==200){
        return this.$message.error('获取折线图数据失败')
    }
    //4.准备数据和配置项
   const results=_.merge(res.data,this.options)
    // 5.使用刚指定的配置项和数据显示图表。
    myChart.setOption(res.data)
  },
  methods: {},
}
</script>
<style lang="stylus" scoped></style>